To score an easy win over your opponent in a one on one match, just throw him outside the ring. Make sure your opponent's time outside the ring is higher then yours. Then, just keep him out there and you will win the match!
Most of the wrestlers have a jab as either pressing X or pressing Left or Right just before pressing X. If you hit your opponent repeatedly, you will earn just as many points for your finishing move bar as if you were to do a grapple move. This allows you to get your finisher much faster.